*{
	padding: 0;
	margin: 0;
}
#body{
	background-image: url(../img/背景.jpg);
	background-repeat: no-repeat;
	background-attachment: fixed;
	background-size: 100% 100%;
	opacity: 0.8;
}
.Nav{
	margin-left: 400px;
	margin-top: -50px;
}

#Az{
	margin: 20px;
	width: 400px;
	height: 60px;
	background-color: lightcoral;
	opacity: 0.5;
	font-family:"微软雅黑";
	color: black;
	
}
.my1{
	margin: 15px;
}
.my2{
	margin-top: 15px;
	margin-left: 30px;
}


.one>li{
	float: left;
}
#Az ul li{
	list-style: none;
	width: 160px;
	text-align: center;
}
#Az ul li>a{
	text-decoration: none;
}
.two{
	display: none;
	position: absolute;
}
.two li>a{
	font-size: 25px;
	color: white;
	line-height: 40px;
}
.two>li:hover{
	background-color: brown;
}
.one>li:hover .two{
	display: block;
}
#xia{
	margin-top: 70px;
	width: 400px;
	height: 500px;
	background-color: white;
	opacity: 0.8;
	margin-left: 20px;
	float: left;
	position: absolute;
}
.c1{
	float: left;
}
.C{
	width: 400px;
	font-size: 20px;
}
#xia p{
	color: #000000;
}
#xia .p2{
	font-size: 20px;
}
#picture{
	margin-top: -200px;
	margin-left: 250px;
	height: 100px;
	width: 100px;
	position: absolute;
	background-color: white;
	opacity: 0.8;
	z-index: 1;
	margin-bottom: 40px;
}
.D a{
	position: absolute;
	opacity: 0;
	animation: donghua 32s infinite;
}
@keyframes donghua{
	0%{opacity: 0;}
	3%{opacity: 1;}
	25%{opacity: 1;}
	28%{opacity: 0;}
}
.D a:nth-child(1){animation-delay: 0s;}
.D a:nth-child(2){animation-delay: 4s;}
.D a:nth-child(3){animation-delay: 6s;}
.D a:nth-child(4){animation-delay: 8s;}